{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T14:39:22Z","timestamp":1753886362515,"version":"3.41.2"},"reference-count":13,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2006,6,1]],"date-time":"2006-06-01T00:00:00Z","timestamp":1149120000000},"content-version":"vor","delay-in-days":151,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["International Journal of Biomedical Imaging"],"published-print":{"date-parts":[[2006,1]]},"abstract":"<jats:p>FDK algorithm is a well\u2010known 3D (three\u2010dimensional) approximate algorithm for CT (computed tomography) image reconstruction and is also known to suffer from considerable artifacts when the scanning cone angle is large. Recently, it has been improved by performing the ramp filtering along the tangential direction of the X\u2010ray source helix for dealing with the large cone angle problem. In this paper, we present an FDK\u2010type approximate reconstruction algorithm for gantry\u2010tilted CT imaging. The proposed method improves the image reconstruction by filtering the projection data along a proper direction which is determined by CT parameters and gantry\u2010tilted angle. As a result, the proposed algorithm for gantry\u2010tilted CT reconstruction can provide more scanning flexibilities in clinical CT scanning and is efficient in computation. The performance of the proposed algorithm is evaluated with turbell clock phantom and thorax phantom and compared with FDK algorithm and a popular 2D (two\u2010dimensional) approximate algorithm. The results show that the proposed algorithm can achieve better image quality for gantry\u2010tilted CT image reconstruction.<\/jats:p>","DOI":"10.1155\/ijbi\/2006\/29370","type":"journal-article","created":{"date-parts":[[2006,6,19]],"date-time":"2006-06-19T12:20:50Z","timestamp":1150719650000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["An Approximate Cone Beam Reconstruction Algorithm for Gantry\u2010Tilted CT Using Tangential Filtering"],"prefix":"10.1155","volume":"2006","author":[{"given":"Ming","family":"Yan","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cishen","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hongzhu","family":"Liang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2006,6]]},"reference":[{"key":"e_1_2_1_1_2","doi-asserted-by":"publisher","DOI":"10.1109\/42.887835"},{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.1118\/1.1373675"},{"key":"e_1_2_1_3_2","doi-asserted-by":"publisher","DOI":"10.1118\/1.1625443"},{"key":"e_1_2_1_4_2","doi-asserted-by":"publisher","DOI":"10.1109\/TMI.2004.829337"},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1118\/1.598938"},{"key":"e_1_2_1_6_2","doi-asserted-by":"publisher","DOI":"10.1364\/JOSAA.1.000612"},{"key":"e_1_2_1_7_2","doi-asserted-by":"publisher","DOI":"10.1109\/42.241876"},{"key":"e_1_2_1_8_2","doi-asserted-by":"publisher","DOI":"10.1137\/S0036139901387186"},{"key":"e_1_2_1_9_2","series-title":"Lecture Notes in Mathematics","first-page":"66","volume-title":"Mathematical Methods in Tomography","author":"Grangeat","year":"1992"},{"key":"e_1_2_1_10_2","doi-asserted-by":"publisher","DOI":"10.1118\/1.2098154"},{"key":"e_1_2_1_11_2","doi-asserted-by":"publisher","DOI":"10.1088\/0031-9155\/37\/3\/001"},{"key":"e_1_2_1_12_2","unstructured":"SourbelleandKalenderW. A. Generalisation of Feldkamp reconstruction for clinical spiral cone beam CT Proceedings of the 7th International Conference on Fully 3D Reconstruction in Radiology and Nuclear Medicine June-July 2003 Saint-Malo France."},{"key":"e_1_2_1_13_2","doi-asserted-by":"publisher","DOI":"10.1118\/1.1755569"}],"container-title":["International Journal of Biomedical Imaging"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/ijbi\/2006\/029370.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1155\/IJBI\/2006\/29370","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,6,6]],"date-time":"2024-06-06T20:28:51Z","timestamp":1717705731000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1155\/IJBI\/2006\/29370"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2006,1]]},"references-count":13,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2006,1]]}},"alternative-id":["10.1155\/IJBI\/2006\/29370"],"URL":"https:\/\/doi.org\/10.1155\/ijbi\/2006\/29370","archive":["Portico"],"relation":{},"ISSN":["1687-4188","1687-4196"],"issn-type":[{"type":"print","value":"1687-4188"},{"type":"electronic","value":"1687-4196"}],"subject":[],"published":{"date-parts":[[2006,1]]},"assertion":[{"value":"2006-06-01","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"029370"}}